#include <stdio.h>
int main(){
	char c1,c2;
	c1 = 97;
	c2 = 98;
	printf("%c\n%c\n",c1,c2);
	printf("%d\n%d\n",c1,c2);
	printf("%c\n%c\n",c1+1,c2+1);
} 
